Mazda CX-5 2.2 Diesel 175HP 2014: Persistent P0472 Error After Replacing DPF Sensor

Question

Hello
I have a problem with the cx-5 2.2 diesel 129kW 2014 car used on the road and yet dpf makes itself felt, the car entered the emergency mode, an error appeared:
P0472 Flue gas pressure sensor - short to ground
P0471 Flue gas pressure sensor - dysfunction
P2227 barometric pressure

I replaced the differential pressure sensor but error P0472 still remains, someone saucer with a similar case?

sebforce1 · Accepted Answer

Thank you very much for your help. I replaced the sensor and cleared the fault codes and the car is now back to normal. You saved me a lot of money!

andrzej20001 · Answer

Sensor tubes unobstructed?

MarcinS70R · Answer

unobstructed tubes i wonder only the internet says that P0472 is a temperature sensor ....

andrzej20001 · Answer

Read human ecu

MarcinS70R · Answer

czytane B-touch P0472 Exhaust pressure sensor: low

andrzej20001 · Answer

What can you see in the parameters?

MarcinS70R · Answer

5 volts all the time on this sensor

andrzej20001 · Answer

And how do you unpin it ??

Anonymous · Answer

Was the adaptation carried out after the sensor replacement ???
The 5V voltage is probably the reference power supply from the controller; it should be fixed 5V
The sensor can be traversed to eliminate the driver beam fault.

What are the sensor working parameters.

MarcinS70R · Answer

So the sensor is connected, the car is running and the voltage is 0.53V and on the other cable 4.8V, the value on the tester is 50kPa. Adaptation not done because my tester is not in the options.

Anonymous · Answer

It looks quite clogged with DPF to me.
This smaller value (0.53V) is the signal from the sensor; and 4.8 is the voltage from the controller;
It looks normal.
Check also what the pressure difference looks like when the engine is off, it should be 0kPa and at 2500-3000 rpm, as a functional sensor it will probably show 100-150kPa.
Alternatively, you can unhook the tube from this sensor before dpf and see what happens.

MarcinS70R · Answer

Thanks buddy for suggestions
I will do as you speak tomorrow and let me know.

It wasn't until today that I looked into her
with the ignition switched on, the pressure difference ranges from -0.11kPa to -0.08 kPa
and at 2500-2800 rpm it is 4.89kPa.

MarcinS70R · Answer

It wasn't until today that I looked into her
with the ignition switched on, the pressure difference ranges from -0.11kPa to -0.08 kPa
and at 2500-2800 rpm is 4.89 kPa, no unchanged hose further 4.89-5 kPa.

P0472 error is all the time and once in a while P0471.

andrzej20001 · Answer

so it looks like a sensor similarly only MB here

MarcinS70R · Answer

In this case, I have a second new sensor and it is the same situation for us. I need to search around the engine maybe there is another sensor measuring the exhaust pressure.

MarcinS70R · Answer

Problem solved
It turned out that this engine has one more exhaust pressure sensor, so small looking like a boost pressure sensor. After his replacement, all fault codes were removed, the check went out and the car finally regained full power.

sebforce1 · Answer

Hello, I know this is an old post so you might not see it. I have a Mazda 6 with identical problems. Can you tell me which exact sensor caused this problem and where I can find it? Thanks.

MarcinS70R · Answer

The sensor is in the rear of the engine Yes, more or less behind the valve cover and before the turbocharger It is a sensor for one tube and a 3-pin plug.

Mat7817 · Answer

Hello mazda 6 2.2 diesel 2013 error p0472 I replaced the exhaust pressure sensors and the check engine disappeared but only for a moment the new sensor looks different, it was not written in the description that now there is such a replacement Added after 1 [minutes]: Can anyone help what to do with it, the car drives normally and once has no power

Alexander4 · Answer

Hey where did you get the sensor? I will also replace it. Today I was on the mazda site and ordered it. Unfortunately, I have to wait two weeks because they do not have it in stock. The cost of PLN 440

Mat7817 · Answer

Part of the year 2014 was to change the name of the sensor under the warranty SHY6-18-W00, enter this code in google so I was looking, I replaced everything is already ok but it does not start as before maybe the village why can it be so

MarcinS70R · Answer

I bought the sensor on the Allegro, I don't know how now, but then there were several of them.

Alexander4 · Answer

Hey, I don't name it myself, I don't know. The mechanic told me that the replacement may not come up. Overall a tough thing with these mazdas. Sometimes on the site also because they have a problem with finding the cause. Rozymiem with you the errors do not pop up from the exchange ?? .

Mat7817 · Answer

I don't have any errors, but the car is not as lively as before, maybe I have to see the throttles. And you have a manual or an automatic machine?

Alexander4 · Answer

Manual. Usually, after a long standstill, it always goes up for about 10-15 seconds and normalizes. Or louder ? Hmm rather the same on a cold one. I have recently noticed that when I go to the check engine (problem with the sensor, scbs), if I turn off the air conditioning, it is stronger ???

Bałdyzer · Answer

I have a question . Where can I find this sensor in the Mazda CX-3 1.5 diesel car?

Mat7817 · Answer

Some of them, I think, will be similar to mine, so look at the picture and search

Mat7817 · Answer

If your engine looks like this, I marked the sensor in the picture

Bałdyzer · Answer

Will it be the sensor that I marked with the arrow in the photo?

Mazda CX-5 2.2 Diesel 175HP 2014: Persistent P0472 Error After Replacing DPF Sensor

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